Tesla's dual motor Model S P85D is a sedan that can already go from 0-60 mph in 3.1 seconds - faster than a Ferrari Enzo or a Ford Mustang Shelby GT500.

Overnight, Model S Teslas around the world got a little faster.

Tesla performed a wireless software upgrade to the car, improving its 0-60 mph speed by about one-tenth (0.1) of a second.

Tesla CEO Elon Musk tweeted about the upgrade, saying it was an update to the inverter algorithm. An inverter, invented by Nikola Tesla more than 100 years ago, changes direct current electricity to alternating current.